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18673 (1998 FH66)
Classification: Outer Main-belt Asteroid          SPK-ID: 2018673
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09305500747193787 3.4654e-08  
a 3.251312121748852 2.1318e-08 au
q 2.948761247965911 1.1148e-07 au
i .2170969048684996 3.9981e-06 deg
node 250.1244134860395 0.0011991 deg
peri 39.39996656854999 0.0011994 deg
M 130.8317523316335 2.4769e-05 deg
tp 2457822.289512608615
(2017-Mar-09.78951261)
0.00014898 TDB
period 2141.34390519174
5.86
2.106e-05
5.766e-08
d
yr
n .1681187216715499 1.6535e-09 deg/d
Q 3.553862995531794 2.3302e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1547  
   data-arc span      10553 days (28.89 yr)  
   first obs. used      1991-01-12  
   last obs. used      2019-12-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5537  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 00:30:25  

Additional Information
 Earth MOID = 1.9318 au 
 Jupiter MOID = 1.58764 au 
 T_jup = 3.174 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.7   n/a MPO452435  
diameter diameter 9.908 km 0.029 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.072   0.013 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

18673 (1998 FH66)          Discovered 1998-Mar-20 by LINEAR at Socorro
Reference: 20001111/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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